16 Celebs Who Looked Like Totally Different People On-Screen

nicole kidman the hours
Paramount Pictures; Xavier Collin/IPA/Splash News
We expect celebs to look like their amazing selves at all times -- except, of course, when we expect them to seriously change their looks in the name of art! It's sort of a TV/movie cliché, but whenever actors dramatically alter their appearance for a role, it definitely seems to increase their odds of cleaning up during awards season ... maybe that's why so many are willing to completely transform themselves!

From celebrities who packed on (or took off) a significant number of pounds to those who donned wigs, colored contacts, and even prosthetics, the A-listers on this list proved themselves to be true chameleons!

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